TOML ↔ JSON Converter
Convert TOML config to JSON and back — handles tables and array-of-tables
Handles common TOML v1.0 features: tables, arrays of tables ([[section]]), inline tables, strings, numbers, booleans, dates. Exotic edge cases (multi-line arrays split across lines with mixed comments) may not round-trip perfectly.
How it works
- 1Paste TOML or JSON
Drop either format — Cargo.toml, pyproject.toml, wrangler.toml, or any config file.
- 2Pick a direction
TOML → JSON or JSON → TOML. The parser handles tables, [[array-of-tables]], and inline tables.
- 3Copy the output
One click sends the converted config to your clipboard.
About TOML ↔ JSON Converter
Free online TOML ↔ JSON converter. Paste TOML (Cargo.toml, pyproject.toml, wrangler.toml, config.toml) to get pretty JSON, or JSON to get clean TOML. Handles tables, array-of-tables, inline tables, dates, and typed literals. Runs entirely in your browser. TOML ↔ JSON Converter on 712 Tools runs entirely inside your browser using modern JavaScript APIs — no server ever sees your data. That means instant results, complete privacy, and no upload limits.
Whether you need to convert toml config to json and back — handles tables and array-of-tables for a debugging session, a quick sanity check, or a production incident, this tool is free to use as many times as you need. There are no watermarks, no sign-up, and no ads inside the tool itself.
Frequently asked questions
Which TOML version?
TOML v1.0. Common features are supported: tables, array-of-tables, inline tables, strings, numbers, booleans, dates.
Does it preserve comments?
No — TOML comments are stripped on parse, same as YAML → JSON. That's a spec limitation, not a tool one.
Why do I care about TOML?
It's the config format for Rust (Cargo.toml), Python packaging (pyproject.toml), Cloudflare Workers (wrangler.toml), and many other modern tools.
Read more
.env files in 2026: parsing, secrets management, and portability
Every framework reads .env slightly differently. Here's the shared subset that works everywhere, the security pitfalls, and how to sync .env with JSON, YAML, and cloud secret stores.
TOML vs YAML vs JSON: picking a config format in 2026
Rust picked TOML. Python packaging picked TOML. Cloudflare Workers picked TOML. Here's why the config landscape shifted, and how to move between TOML, YAML, and JSON without breakage.
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